#include <bits/stdc++.h>

#define ll long long
#define ull unsigned long long
#define uint unsigned int

#define YES cout << "YES" << '\n'
#define NO cout << "NO" << '\n'
#define endl '\n'
const int INF = 1e9;
const int MOD = 998244353;
using namespace std;

/*思考 滑窗 贪心

*/

void solve() {
    int n, k;
    int ans = 0;
    cin >> n >> k;
    vector<int> a(n + 1);
    for (int i = 1; i <= n; i++) {
        cin >> a[i];
    }
    int cnt = 0;
    for (int i = 1; i <= n; i++) {
        if (a[i] == 0) {
            ++cnt;
            if (cnt == k) {
                ++ans;
                cnt = -1;
            }
        } else {
            cnt = 0;
        }
    }
    cout << ans << endl;
}

int main() {
    ios::sync_with_stdio(0);
    cin.tie(0);
    int t = 0;
    cin >> t;
    while (t--) solve();
    return 0;
}
